To standardize the methods and equipment to enable the flow-rate of fluids in closed conduits to be determined by the measurement of the mean axial flow velocity or by the integration of the local velocities.

Examples of such equipment are as follows: electromagnetic flowmeters, ultrasonic flowmeters, coriolis mass flowmeters, instability methods (vortex, fluidic ...), velocity-area methods (current meters, Pitot tubes ...), tracer methods (di-lution method, transit time method, ...) etc.

Quick links


Published ISO standards *


ISO standards under development *

Participating members
Observing members

* number includes updates

Reference Title Type
ISO/TC 30/SC 5/TG 1   Clamp-on Working group
ISO/TC 30/SC 5/WG 1   Ultrasonic flow measurement for gas Working group
ISO/TC 30/SC 5/WG 7   Tracer methods Working group
ISO/TC 30/SC 5/WG 8   Pitot tubes Working group
Liaison Committees to ISO/TC 30/SC 5

The committees below can access the documents of ISO/TC 30/SC 5:

Reference Title ISO/IEC
IEC/SC 65B Measurement and control devices IEC
ISO/TC 28/SC 2 Measurement of petroleum and related products ISO


Liaison Committees from ISO/TC 30/SC 5

ISO/TC 30/SC 5 can access the documents of the committees below:

Reference Title ISO/IEC
ISO/TC 28/SC 2 Measurement of petroleum and related products ISO


Organizations in liaison (Category A and B)
Acronym Title Category
IAEA International Atomic Energy Agency A
OIML International Organization of Legal Metrology A

ISO/TC 30/SC 5 - Secretariat

SNV [Switzerland]

Swiss Association for Standardization
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CH-8404 Winterthur

Tel: +41 52 224 54 54
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